# LabelQueue - Free Batch Barcode Generator & Avery Label Maker

> 100% client-side, privacy-first browser software utility for batch barcode generation, Avery compatible label sheet formatting, Excel mail merges, and ZPL thermal printer conversions. Zero server uploads.

## Core Software Capabilities
- **Batch Barcode Generator**: High-speed client-side generation of Code 128, UPC-A, EAN-13, ITF-14, and Data Matrix barcodes with vector PDF export.
- **Avery Compatible Label Templates**: Instant formatting for Avery 5160 (30-up), 5163 (10-up), 5164 (6-up), 5167 (80-up), 8160, 5161, 5162, 5168, 5260, 5366, 5371, 5395, 5960, 8163, and 22806 round sticker layouts.
- **Excel Mail Merge**: Client-side XLSX/CSV parsing and dynamic label population directly in browser memory.
- **Hardware Thermal Print Studios**: Dedicated setup guides and fixers for Zebra, Rollo, Munbyn, and macOS thermal print margins.
- **ZPL Converter**: Web-based ZPL code viewer, renderer, and vector PDF converter.

## Key Pages & Tools
- [Avery 5160 Address Template](/template/avery-5160): Standard 30-up address label layout.
- [Avery 5163 Shipping Template](/template/avery-5163): 10-up shipping and package label maker.
- [Code 128 Generator](/generator/code-128): Industrial Code 128 barcode generator.
- [UPC-A Generator](/generator/upc-code): Retail UPC-A 12-digit barcode generator.
- [Excel to Labels](/excel-to-labels): Bulk mail merge tool from spreadsheet data.
- [ZPL Viewer](/tools/zpl-viewer): Instant ZPL preview and PDF converter.
- [Privacy Policy](/privacy-policy): Client-side privacy guarantee and compliance details.
- [Contact Support](/contact): Engineering support email (admin@labelqueue.com) with 24h SLA.

## Technical Standards
- **Vector Engine**: Pure 72 DPI PostScript exact-scale PDF rendering.
- **Privacy Model**: Zero remote server processing. Data stays 100% inside client JavaScript memory sandbox.